General Chemistry 1

Question

A chemist carefully measures the amount of heat needed to raise the temperature of a 0.64kg sample of a pure substance from −5.4°C to 18.6°C. The experiment shows that 3.6kJ of heat are needed. What can the chemist report for the specific heat capacity of the substance? Round your answer to 2 significant digits.

Answer 1

q = mC∆T

just plug in the values and solve for C.

3.6 kJ = (0.64 kg)(C)(24º)

C = 3.6 kJ / (0.64 kg)(24º) = answer in kJ/kg/degree